I have a question about the ratio of room spraying as follows: 01 The ratio of water and alcohol should continue to use water. แอลกอฮอล์ how much? 02 แอลกอฮอล์ used in Room spray, there are many? Some brands use PEG40, some are PPG-1-PEG- 9 Not sure if they are the same or different 03 Mixing with w...
